A couple was caught on camera using homemade credit cards to make large purchases, police said.

Police said thefts like these add to the high cost of credit card fraud.

Surveillance video from a Titusville Walmart showed a woman with a white hairband walking, followed by a man in a gray T-shirt. Police said they're getting away with theft, and they're "good at it."

"They're using other people's information and making credit cards and using those credit cards fraudulently," said Amy Matthews, with the Titusville Police Department.

One way to get people's credit card numbers is through skimmers, commonly used on gas pumps. The state attorney general said thieves profit by raiding mailboxes, by phishing, pretending to be a trustworthy entity or just by stealing the cards themselves.

Police are trying to track down how the thieves are getting the card numbers.

Surveillance video shows the suspects from different angles at Walmart. Police said they are also hitting other stores.

A LexisNexis study said customers lose $5 billion per year to credit card fraud, but merchants lose $190 billion. Customers also pay for that through higher prices.

"They come in, and they come out. They're very calm. If you see their faces and can recognize them, please let us know," Matthews said.

Police said the pair are making large purchases, and finding them could save citizens a lot of money.